SCM435 SCM440 Alloy Steel for Mechanical Structures
Alloy steel with added chromium and molybdenum, suitable for machine parts, featuring excellent strength, toughness, and fatigue resistance.
From material selection to cutting, processing, and heat treatment. High-strength SCM materials are handled comprehensively by Kumagai!
1. What is alloy steel for mechanical structures? - Steel materials for mechanical parts requiring high strength and high toughness - Strict management of composition and mechanical properties based on JIS standards - High performance achievable through design based on heat treatment - Extensive track record in industrial machinery, automobiles, and construction machinery fields 2. Excellent material properties - High strength and toughness due to chromium and molybdenum additions - Fatigue resistance and wear resistance ensured through quenching and tempering - Exhibits stable mechanical properties compared to carbon steel 3. Wide range of applications and steel types - High-strength shafts, gears, drive shafts, pins, etc. - Industrial machinery, automotive parts, construction machinery - Selectable by application, such as SCM435/SCM440 4. Kumagai Special Steel's responsiveness - Handling standard and cut materials of alloy steel for mechanical structures - Consistent support from cutting to processing and heat treatment arrangements - Flexible response to small lot and short delivery time projects 5. Value proposition to customers - Proposing optimal steel types according to usage conditions - One-stop support for materials and processing - A trusted partner supporting manufacturing For quotes, click here↓↓↓ https://www.kumagai-steel.co.jp/contact/offer/
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basic information
SCM435 and SCM440 are alloy steels with added chromium and molybdenum, used for machine parts that require high strength and toughness. The chemical composition and mechanical properties are specified based on JIS standards, allowing for designs that assume heat treatment such as quenching and tempering. They have been adopted for many years in the fields of industrial machinery, automobiles, and construction machinery. 6. Main Specifications and Characteristics - Steel type classification: Alloy steel for machine structures (SCM material) - Chemical composition and mechanical properties specified based on JIS standards - High hardenability due to chromium and molybdenum addition - High strength and toughness ensured through heat treatment 7. Features in Processing and Construction - Material design based on cutting and heat treatment - Compatible with gas cutting and mechanical cutting - Various heat treatments such as quenching and tempering are possible - Material characteristics suitable for high-load component processing 8. Key Points in Performance - High tensile strength and excellent fatigue resistance - Stable mechanical properties compared to carbon steel - Reliability required for high-stress component applications They are widely used in various industrial machinery and equipment fields where high strength is required, including machine parts such as shafts, gears, drive shafts, and pins. This is a reliable steel material that allows for the selection of steel types according to design conditions.
Price range
Delivery Time
P3
※Kumagai Special Steel has extensive experience in handling SCM435 and SCM440, and has established a system for immediate delivery, including cutting and heat treatment. Additionally, for special specifications or large lots, it may take some time. Please contact us by email or phone!
Applications/Examples of results
SCM435 and SCM440 are steel materials widely used as machine parts and structural materials for equipment that require high strength and high toughness. Through alloy design with added chromium and molybdenum, they exhibit stable mechanical properties after heat treatment and have been adopted for many years as core materials supporting the industrial machinery, automotive, and construction machinery sectors under component management based on JIS standards. 8. Main Applications and Practical Examples - Industrial Machinery: High-strength shafts, gears, drive shafts - Construction Machinery: High-load pins, support and connecting members - Automation Equipment: Drive components, mechanism parts - Various Devices: Load-bearing members, jigs, mounting parts - General Machine Parts: Machined and heat-treated products 9. Evaluation Points in Practical Use - High strength and toughness through quenching and tempering - Excellent fatigue resistance and wear resistance - Flexibility in performance adjustment based on heat treatment conditions 10. Expected Future Market Areas - High performance and durability of industrial machinery - Expansion of equipment renewal and automation needs - High-load and high-reliability component fields - Space-saving and lightweight requirements in equipment sectors Alloy steels for machine structures, SCM435 and SCM440, are expected to have stable demand in a wide range of applications centered around machinery and equipment fields, based on their high reliability and performance.
Line up（2）
| Model number | overview |
|---|---|
| SCM435 (high hardenability, ensuring high strength and high durability) | It has high hardenability, allowing for higher strength and durability than S48C and S55C. While the material cost is higher than carbon steel, it has superior performance. |
| SCM440 (compared to SCM435, intended for higher strength and higher hardness applications) | For applications requiring higher strength and hardness than SCM435. Due to variations in availability compared to SCM435 depending on the grade, inquiries are essential. |
Company information
**Expanding Our Global Steel Business!** We support both **CIF and EX Works (EXW)** terms. **Delivering Japanese Specialty Steel to the World.** Since our establishment in 1913, we have been a specialized trading company of special steel for nearly a century, listening to the needs of many customers and building an ideal relationship between customers and steel manufacturers as a conductor of steel distribution. As a trading company with various processing equipment, including cutting machines and laser cutting machines, we also contribute to reducing our customers' capital investment. Please feel free to contact us if you have any requests.
